Abstract：
:In the present work, chitosan physicochemical transformations that occur during high energy ball milling are investigated and correlated with adsorption capacity of organic pollutants (using azo-dye reactive red 2 as molecular probe). Experimental results reveal that chitosan ball milled for 1 h shows a 70% increase of adsorption capacity, compared to unmilled one, while longer milling time causes a sensible reduction of such capacity. This trend correlates with specific surface area evolution under milling, thus suggesting the primary role of particle comminution in augmenting chitosan adsorption properties. Amorphization of particle surface was found to be marginally relevant for adsorption capacity enhancement. Maximum adsorption capacity (estimated by isothermal equilibrium study) and adsorption rate are augmented by ball milling, with an optimal value found at 1 h milling. Finally, the milled materials were tested to adsorb perfluorooctane sulfonate, obtaining 1.54 mmol g-1 uptake with 1 h milled chitosan. This suggests that chitosan could be used as a cheap expendable material to remove those pollutants, like perfluorooctane sulfonate and the other perfluoroalkyl substances, that deserves destruction and cannot be removed by conventional degradation technologies.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Qiu W,Vakili M,Cagnetta G,Huang J,Yu Gdoi
10.1016/j.ijbiomac.2020.01.171subject
Has Abstractpub_date
2020-04-01 00:00:00pages
543-549eissn
0141-8130issn
1879-0003pii
S0141-8130(19)38780-Xjournal_volume
148pub_type
杂志文章abstract：:Vanadium-binding protein (VBP) was separated from the blood of the fresh sea urchin Halocynthia roretzi through (NH4)2SO4 precipitation, Diethylaminoethyl Sepharose fast-flow ion-exchange chromatography, and Sephacryl S-200 high-resolution size-exclusion chromatography. The protein size and purification yield of VBP w...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.106
更新日期：2019-07-15 00:00:00
abstract：:Bacterial cellulose (BC) derived materials represents major advances to the current regenerative and diagnostic medicine. BC is a highly pure, biocompatible and versatile material that can be utilized in several applications - individually or in the combination with different components (e.g. biopolymers and nanoparti...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2017.05.171
更新日期：2017-11-01 00:00:00
abstract：:The conventional vulcanization process applied to elastomers is irreversible and hinders therefore their useful recycling. We demonstrate here that natural rubber can be reversibly crosslinked via the Diels-Alder coupling of furan and maleimide moieties. The furan-modified natural rubber used in this strategy was also...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.11.102
更新日期：2017-02-01 00:00:00
abstract：:Basa acellular dermal matrix (BADM) has advantages in the preparation of oral prosthetic membranes. In order to prepare high-quality BADM, a suitable cross-linking agent is necessary. In this study, acellular dermal matrix was prepared from basa fish skin and then cross-linked with carbodiimide (EDC), oxidized chitosa...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.07.019
更新日期：2020-12-01 00:00:00
abstract：:The design of 3D hydrogel constructs to elicit highly controlled cell response is a major field of interest in developing tissue engineering. The bioactivity of encapsulated cells inside pure alginate hydrogel is limited by its relatively inertness. Combining short nanofibers within a hydrogel serves as a promising me...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.11.199
更新日期：2021-01-15 00:00:00
abstract：:The phase behavior of aqueous systems containing hyaluronan, at concentrations between 2 and 100 mg/L, and oppositely charged surfactants was investigated. A fluorescence probe technique revealed the formation of micellar structures on the hyaluronan in homogeneous systems well below the surfactant standard, critical,...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.01.176
更新日期：2018-06-01 00:00:00
abstract：:Four water-soluble polysaccharides (LSPa1, LSPb1, LSPb2 and LSPc1) extracted from the fruiting bodies of Lepista sordida were prepared by DEAE cellulose-52 anion-exchange and Sepharose 6 Fast Flow gel-permeation chromatography. LSPa1 was composed of Glc, Man and Gal with a molar ratio of 3.2: 1.3: 0.6. LSPb1, LSPb2 an...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.05.033
更新日期：2013-09-01 00:00:00
abstract：:Porous scaffolds composed of alginate (AG) and chitosan (CS) were fabricated by combining the formation of polyelectrolyte complex (PEC) with freeze-drying. The AG scaffold was used as a framework with uniformly distributed and interconnected pore structure. The chitosan or chitosan/hydroxyapatite (CS/HA) composite so...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2009.11.004
更新日期：2010-03-01 00:00:00
abstract：:Beta-lactoglobulin has been found to be a member of a super family of protein that bind specific ligands and which share common features in their amino acid sequences. Here we show that these features are grouped spatially on the surface of the proteins and suggest that they may be concerned with binding to cell-surfa...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/0141-8130(89)90041-x
更新日期：1989-02-01 00:00:00
abstract：:In this work three dimensional biodegradable nanofiberous scaffolds containing poly(ε-caprolactone) (PCL), poly(vinyl alcohol) (PVA) and gum tragacanth (GT) were successfully fabricated through two nozzles electrospinning process. For this purpose, PVA/GT blend (Blend: B) solution (60:40wt%) was injected from one syri...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.10.042
更新日期：2017-01-01 00:00:00
abstract：:This work targeted to investigate the potential of thermo-responsive hydroxybutyl chitosan (HBC) hydrogel using as an embolic material for occlusion of selective blood vessels. HBC hydrogel was prepared via an etherification reaction between chitosan (CS) and 1, 2-butene oxide. The hydroxybutyl groups were introduced ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.07.082
更新日期：2017-12-01 00:00:00
abstract：:Cranberry proanthocyanidin-chitosan nanoparticles (PAC-CHT NPs) loaded with antibiotic gentamicin (GEN) (PAC-CHT-GEN NPs) were formulated and characterized according to size, polydispersity (PDI), surface charge, morphology, and encapsulation efficiency (EE). PAC-CHT-GEN NPs were evaluated for their ability to aggluti...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.07.213
更新日期：2020-11-01 00:00:00
abstract：:Biocompatible and biodegradable gelatin is a good candidate bioink for use in 3D bioprinting technologies, but viscous gelatin solution has a low printability. In order to improve the poor printability of gelatin, we optimized the rheological properties of gelatin solution. 3D gelatin scaffolds were then cross-linked ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.05.207
更新日期：2019-08-15 00:00:00
abstract：:This study reports the effects on antimicrobial, antioxidant, migration and disintegrability activities of ternary nanocomposite films based on poly(lactic acid) incorporating two biobased nanofillers, (cellulose nanocrystals (CNC) and lignin nanoparticles (LNP)), in two different amounts (1 and 3% wt.). Results from ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.04.068
更新日期：2016-08-01 00:00:00
abstract：:Polysaccharide extracted from green algae Enteromorpha linza (EP) is a sulfated polysaccharide, which possesses excellent antioxidant activities. In present study, the acetylated derivatives of low-molecular-weight polysaccharide (LEP) was prepared with the method of response surface quadratic model. And then the anti...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2014.04.058
更新日期：2014-08-01 00:00:00
abstract：:Complex coacervation was achieved by mixing the lysing enzyme from T. harzianum (LYS) with polyallylamine hydrochloride (PAH). We show in this work that the study electrostatic complexes conformation can lead to the formation of dense complexes. We systematically investigated the effects of pH and the mass ratio on th...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.11.266
更新日期：2019-03-01 00:00:00
abstract：:Hydrogen-Deuterium exchange kinetics of β-lactoglobulin and β-lactoglobulin (-)-epicatechin solutions has been investigated through the analysis of the amide I absorption band at 1650cm-1 in the FTIR spectrum. H-D substitution in NH amides and residues of the protein results in a slight red-shift and in intensity chan...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.06.028
更新日期：2017-11-01 00:00:00
abstract：:The shear flow of hyaluronate solutions prepared from mixtures of hyaluronates with different molecular weights has been studied. This paper shows that prediction of the rheological behaviour of polymer mixtures at a given polymer concentration is possible knowing the intrinsic viscosity of the different mixed samples...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/0141-8130(94)90040-x
更新日期：1994-06-01 00:00:00
abstract：:Thebaine 6-O-demethylase (T6ODM) is an Fe(II)/2-oxoglutarate-dependent dioxygenase catalysing two oxidative O-demethylation reactions in morphine biosynthesis. Its crystal structure revealed a large active site pocket which is at least two times larger than necessary to accommodate a substrate (thebaine or oripavine) ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.07.030
更新日期：2020-11-15 00:00:00
abstract：:Nanoparticles (NPs) have immense potential as drug-delivery carriers for cancer therapy due to their unique physicochemical properties. These particles can improve the pharmacological and therapeutic properties of the anti-cancer drugs by controlling release rates and targeted delivery process, which eliminate the lim...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2014.10.052
更新日期：2015-01-01 00:00:00
abstract：:Konjac glucomannan (KGM)/zein blend films were successfully prepared by solution casting at different drying temperatures (40, 50, 60, 70 and 80°C). The effects of drying temperature on the films' structural, thermomechanical, mechanical and water barrier properties were investigated. Microstructural observations indi...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.07.007
更新日期：2019-10-01 00:00:00
abstract：:Codonopsis pilosula polysaccharide (CPPS) and selenizing CPPS (sCPPS) were prepared and identified by a combination of chemical and instrumental analysis. Their immune modulation activities were compared by lymphocyte proliferation and flowcytometry tests in vitro or serum antibody responses and cytokines with immuniz...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.05.149
更新日期：2020-10-01 00:00:00
abstract：:Poly(3-hydroxybutyrate) (PHB) is a common polyhydroxyalkanoate (PHA) with potential as an alternative for petroleum-based plastics. Previously, we reported a new strain, Halomonas sp. YLGW01, which hyperproduces PHB with 94% yield using fructose. In this study, we examined the PHB production machinery of Halomonas sp....
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.11.163
更新日期：2021-01-15 00:00:00
abstract：:Microbial cell surface display technology is a powerful tool for displaying proteins on the surfaces of cells. However, few anchoring proteins can be employed for the display of target proteins on the cell surface of the environmentally benign Gram-positive bacterium Bacillus subtilis. In this study, bioinformatics to...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.033
更新日期：2019-07-15 00:00:00
abstract：:The inner membrane complex (IMC) is a defining feature of apicomplexans comprising of lipid and protein components involved in gliding motility and host cell invasion. Motility of Plasmodium parasites is accomplished by an actin and myosin based glideosome machinery situated between the parasite plasma membrane (PPM) ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.12.239
更新日期：2019-04-01 00:00:00
abstract：:The difference of enzymatic degradation behavior between Poly (butylene succinate-co-diethylene glycol succinate) (PBS-co-DEGS) and Poly (butylene succinate-co-butylene diglycolic acid) (PBS-co-BDGA) was studied in a Tetrahydrofuran (THF)/toluene mixed system by Novozym 435 (N435, immobilized Candida Antarctica lipase...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.06.062
更新日期：2018-10-15 00:00:00
abstract：:In this study, the sulfated polysaccharide (SPs) was isolated from Spirulina platensis. The isolated SPs contains carbohydrate, sulfate, protein and uronic acid at 38.7 ± 0.30%, 21.3 ± 0.87%, 7.1 ± 0.15% and 7.9 ± 0.4% respectively. The elemental analysis confirmed the presence of carbon (18.01 ± 0.10%), hydrogen (1.8...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.09.024
更新日期：2019-12-01 00:00:00
abstract：:In this study, inspired by nacre-like structural natural shells, novel three-dimensional (3D) nanocomposites based on natural nanoplatelets of montmorillonite (MMT) and polysaccharide of chitosan (CS) were prepared with solution intercalation and self-assembly process. The CS-intercalated-MMT nanoplatelets units acted...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.10.070
更新日期：2020-12-15 00:00:00
abstract：:This paper reports on the effect of improved porous characteristics of cellulose on its solubility in DMAc/LiCl. The use of freeze-drying (FD) treatment led to higher surface area and void fraction of volume for high-molecular-weight (HMW) cotton cellulose (DP~5000). Improvement in porous characteristics of cellulose ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.10.062
更新日期：2019-02-15 00:00:00
abstract：:Arginine kinase (AK), a crucial enzyme in energy metabolism, buffers cellular ATP levels by catalyzing the reversible phosphoryl transfer between ATP and arginine. To better understand the role of Cys271 in conformational changes of AK from greasyback shrimp (Metapenaeus ensis), we replaced the residue with serine and...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2011.04.002
更新日期：2011-07-01 00:00:00
